Untitled

#!/usr/bin/python3

import os
import time
import urllib.request
import http.server
import numpy
from PIL import Image

if not os.path.exists('jquery.min.js'):
    response = urllib.request.urlopen("http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.1/jquery.min.js")
    open('jquery.min.js','wb').write(response.read())
    print('need download')

class MyHandler(http.server.BaseHTTPRequestHandler):
    def do_HEAD(s):
        s.send_response(200)
        s.send_header("Content-type", "text/html")
        s.end_headers()

    def getIndex(s):
        s.send_response(200)
        s.send_header("Content-type", "text/html")
        s.end_headers()
        s.wfile.write(b'''<html><head><title>Title goes here.</title></head>
<body style="margin:0; padding:0">
<div id = "video" style = "width:100%; height:100%">
   <img style = "width:100%; height:100%"/>
</div>
<script src="jquery.min.js"></script>
<script type="text/javascript">
   setInterval(function(){
       $('#video > img').attr('src', 'jpg?random=' + Math.random())
   }, 300);
</script>
</body></html>
''')
    def getJQuery(s):
        s.send_response(200)
        s.send_header("Content-type", "application/x-javascript")
        s.end_headers()
        s.wfile.write(open('jquery.min.js','rb').read())

    def getJpg(s):
        s.send_response(200)
        s.end_headers()
        a = numpy.random.rand(720,1280,3) * 255
        image = Image.fromarray(a.astype('uint8')).convert('RGBA')
        image.save(s.wfile, "JPEG")

    getDict = {
        '/': getIndex,
        '/jquery.min.js': getJQuery,
    }

    def do_GET(s):
        path = str(s.path)
        if path in s.getDict:
            s.getDict[path](s)
        elif '/jpg?random=' in path:
            s.getJpg()
        else:
            print('s.path: >>'+path+'<<')

HOST_NAME = '127.0.0.1'
PORT_NUMBER = 8000

if __name__ == '__main__':
    server_class = http.server.HTTPServer
    httpd = server_class((HOST_NAME, PORT_NUMBER), MyHandler)
    print(time.asctime(), "Server Starts - %s:%s" % (HOST_NAME, PORT_NUMBER))
    try:
        httpd.serve_forever()
    except KeyboardInterrupt:
        pass
    httpd.server_close()
    print(time.asctime(), "Server Stops - %s:%s" % (HOST_NAME, PORT_NUMBER))